Measurements of B →j /ψ at forward rapidity in p+p collisions at s =510 GeV

(PHENIX Collaboration)

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report the first measurement of the fraction of J/ψ mesons coming from B-meson decay (FB→J/ψ) in p+p collisions at s=510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of J/ψ due to B-meson decays from prompt J/ψ. The measured value of FB→J/ψ is 8.1%±2.3%(stat)±1.9%(syst) for J/ψ with transverse momenta 0<pT<5 GeV/c and rapidity 1.2<|y|<2.2. The measured fraction FB→J/ψ at PHENIX is compared to values measured by other experiments at higher center of mass energies and to fixed-order-next-to-leading-logarithm and color-evaporation-model predictions. The bb cross section per unit rapidity [dσ/dy(pp→bb)] extracted from the obtained FB→J/ψ and the PHENIX inclusive J/ψ cross section measured at 200 GeV scaled with color-evaporation-model calculations, at the mean B hadron rapidity y=±1.7 in 510 GeV p+p collisions, is 3.63-1.70+1.92 μb. It is consistent with the fixed-order-next-to-leading-logarithm calculations.

Original languageEnglish
Article number092002
JournalPhysical Review D
Volume95
Issue number9
DOIs
Publication statusPublished - 2017 May 1

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mesons
logarithms
collisions
apexes
evaporation
color
detectors
cross sections
decay
transverse momentum
center of mass
silicon
predictions
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

@article{c2b3d9dd363147e690bdcde5d0fe4ecf,
title = "Measurements of B →j /ψ at forward rapidity in p+p collisions at s =510 GeV",
abstract = "We report the first measurement of the fraction of J/ψ mesons coming from B-meson decay (FB→J/ψ) in p+p collisions at s=510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of J/ψ due to B-meson decays from prompt J/ψ. The measured value of FB→J/ψ is 8.1{\%}±2.3{\%}(stat)±1.9{\%}(syst) for J/ψ with transverse momenta 0",
author = "{(PHENIX Collaboration)} and C. Aidala and Ajitanand, {N. N.} and Y. Akiba and R. Akimoto and J. Alexander and M. Alfred and K. Aoki and N. Apadula and H. Asano and Atomssa, {E. T.} and A. Attila and Awes, {T. C.} and C. Ayuso and B. Azmoun and V. Babintsev and M. Bai and X. Bai and B. Bannier and Barish, {K. N.} and S. Bathe and V. Baublis and C. Baumann and S. Baumgart and A. Bazilevsky and M. Beaumier and R. Belmont and A. Berdnikov and Y. Berdnikov and D. Black and Blau, {D. S.} and M. Boer and Bok, {J. S.} and K. Boyle and Brooks, {M. L.} and J. Bryslawskyj and H. Buesching and V. Bumazhnov and C. Butler and S. Butsyk and S. Campbell and C. Canoaroman and Chen, {C. H.} and Chi, {C. Y.} and M. Chiu and Choi, {I. J.} and Choi, {J. B.} and S. Choi and P. Christiansen and T. Chujo and V. Cianciolo",
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Measurements of B →j /ψ at forward rapidity in p+p collisions at s =510 GeV. / (PHENIX Collaboration).

In: Physical Review D, Vol. 95, No. 9, 092002, 01.05.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Measurements of B →j /ψ at forward rapidity in p+p collisions at s =510 GeV

AU - (PHENIX Collaboration)

AU - Aidala, C.

AU - Ajitanand, N. N.

AU - Akiba, Y.

AU - Akimoto, R.

AU - Alexander, J.

AU - Alfred, M.

AU - Aoki, K.

AU - Apadula, N.

AU - Asano, H.

AU - Atomssa, E. T.

AU - Attila, A.

AU - Awes, T. C.

AU - Ayuso, C.

AU - Azmoun, B.

AU - Babintsev, V.

AU - Bai, M.

AU - Bai, X.

AU - Bannier, B.

AU - Barish, K. N.

AU - Bathe, S.

AU - Baublis, V.

AU - Baumann, C.

AU - Baumgart, S.

AU - Bazilevsky, A.

AU - Beaumier, M.

AU - Belmont, R.

AU - Berdnikov, A.

AU - Berdnikov, Y.

AU - Black, D.

AU - Blau, D. S.

AU - Boer, M.

AU - Bok, J. S.

AU - Boyle, K.

AU - Brooks, M. L.

AU - Bryslawskyj, J.

AU - Buesching, H.

AU - Bumazhnov, V.

AU - Butler, C.

AU - Butsyk, S.

AU - Campbell, S.

AU - Canoaroman, C.

AU - Chen, C. H.

AU - Chi, C. Y.

AU - Chiu, M.

AU - Choi, I. J.

AU - Choi, J. B.

AU - Choi, S.

AU - Christiansen, P.

AU - Chujo, T.

AU - Cianciolo, V.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - We report the first measurement of the fraction of J/ψ mesons coming from B-meson decay (FB→J/ψ) in p+p collisions at s=510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of J/ψ due to B-meson decays from prompt J/ψ. The measured value of FB→J/ψ is 8.1%±2.3%(stat)±1.9%(syst) for J/ψ with transverse momenta 0

AB - We report the first measurement of the fraction of J/ψ mesons coming from B-meson decay (FB→J/ψ) in p+p collisions at s=510 GeV. The measurement is performed using the forward silicon vertex detector and central vertex detector at PHENIX, which provide precise tracking and distance-of-closest-approach determinations, enabling the statistical separation of J/ψ due to B-meson decays from prompt J/ψ. The measured value of FB→J/ψ is 8.1%±2.3%(stat)±1.9%(syst) for J/ψ with transverse momenta 0

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U2 - 10.1103/PhysRevD.95.092002

DO - 10.1103/PhysRevD.95.092002

M3 - Article

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VL - 95

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 9

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